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$597+ Cheap flights from Ontario (ONT) to Northern Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BFS
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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Cheap flight deals from Ontario to Northern Ireland

Keep the following information in mind while searching for Ontario to Northern Ireland flight deals. Data was last updated septiembre 16, 2025.

Round-trip from

$597
(British Airways)

Popular in

June

Cheapest in

November

Average price

$923
From Ontario to Northern Ireland
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Ontario to Northern Ireland

Cheapest flights from Ontario to Northern Ireland
Explore the most affordable flight options available from Ontario to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 16, 2025.

This British Airways deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/24:47 pmONT - BHD
2 stops15h 58mBritish Airways
mar. 12/96:35 amBHD - ONT
2 stops23h 53mBritish Airways
Deal found 9/16$597
This Iberia deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/37:00 amONT - BHD
2 stops19h 15mMultiple Airlines
mié. 12/1011:25 amBHD - ONT
2 stops19h 03mMultiple Airlines
Deal found 9/16$662
This British Airways deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/44:47 pmONT - BHD
2 stops17h 13mBritish Airways
jue. 12/1111:05 amBHD - ONT
2 stops19h 14mBritish Airways
Deal found 9/16$777
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/214:47 pmONT - BHD
2 stops16h 28mBritish Airways
dom. 11/308:25 pmBHD - ONT
2 stops32h 46mBritish Airways
Deal found 9/14$1,421
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/184:45 pmONT - BHD
2 stops15h 55mBritish Airways
vie. 12/2611:30 amBHD - ONT
2 stops18h 44mBritish Airways
Deal found 9/15$1,989
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/184:45 pmONT - BHD
2 stops15h 55mBritish Airways
lun. 12/2911:30 amBHD - ONT
2 stops18h 44mBritish Airways
Deal found 9/14$2,046

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Northern Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
Use the filters below to find and compare flights from Ontario to Northern Ireland that are best for you.

Fly from

Ontario

Fly to

Northern Ireland

Route

Depart

Return

Price

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

mar. 12/2

4:47 pm-4:45 pm

2 stops15h 58m

Belfast City

mar. 12/9

6:35 am-10:28 pm

2 stops23h 53m

$597

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

jue. 12/4

4:47 pm-6:00 pm

2 stops17h 13m

Belfast City

jue. 12/11

11:05 am-10:19 pm

2 stops19h 14m

$777

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

vie. 11/21

4:47 pm-5:15 pm

2 stops16h 28m

Belfast City

dom. 11/30

8:25 pm-9:11 pm

2 stops32h 46m

$1,421

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

jue. 12/18

4:45 pm-4:40 pm

2 stops15h 55m

Belfast City

vie. 12/26

11:30 am-10:14 pm

2 stops18h 44m

$1,989

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

jue. 12/18

4:45 pm-4:40 pm

2 stops15h 55m

Belfast City

lun. 12/29

11:30 am-10:14 pm

2 stops18h 44m

$2,046

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Best time to book a flight from Ontario to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Northern Ireland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Northern Ireland?

    For a flight from Ontario to Northern Ireland, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • How long is the flight from Ontario to Northern Ireland?

    For as low as $597, British Airways can have you in Northern Ireland from Ontario in 15h 58m. The distance between Ontario and Northern Ireland is about 5095 mi.

  • Can I find deals for flights from Ontario to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Ontario to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Northern Ireland.

  • Can I find deals for business class flights from Ontario to Northern Ireland?

    Yes. Cheapflights offers flight deals from Ontario to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Northern Ireland?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Northern Ireland (average of $657). Flying from Ontario to Northern Ireland in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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